Jack.



H: D. REY.

JACK. APPLICATION FIL ED JULY], I918 WITNESSES 9-- Patented Apr. 8,1919;

eietriie :e

Emmi: F AVAR'UA, ISLAND 0F RAROTONGA, COOK ISLAND S.

wean-Wuha- A lication filed July 1, role.

- To all whom it m cg; concern Be it known that I, HENRI DANIEL REY, a citizen of the Republic of France, and a resident of Aver-ca, in the island of Rare toiigzi one of the Cook Islands, Within the boundaries of New Zeeland, have invented certain new and useful Improvements in Jacks, of which the following is a epeciiicw tron,

My invention is an improvement in jacks, and relates to those of the screw operated type, wherein pairs of toggle levers are provided, having at one end a base and at the other end a head for engaging the object to he lii l'ed, the screw having threaded engagement with one pair of the levers and. it re tumble engagement with the other at the connectionof the members oi the pairs, for moving" said connectionstowerd and from cachothcr when the screw is rotated,

In the drawings:

Fignre 1 il front view of the improved jack in use;

Fig. 2 :1 side View;

3 is; an enlarged sectional deteil it the jack;

front View of screw;

21 front View of the holder.

embodiment of the invention, a plurality of pairs of togrggic levers is provided, each pair consietieg of sii'rcilar .iwulOllfi l. and 2, and. the said sections have their crljsc it ends forked, indicated at 3, the arms the :forirs being lapped upon each othc and pivotally connected in e n1cnto he deecr'hcd. Referring to 2 it will he noticed that the meeting feces of the arms of the sections 1 are rahheted, as indicarted at at, to receive the arms of the sections 55 which, are err-ringed upon the inner feces of the arms of sections L A block 5 is arranged between. the arms of the sections of each pair, is pivotelly connected to the arms oi? the sections by means; oi stein-s 6 which pass outwardly from the ends of the blocks through registering; openings in the lapping arms hesced out-side of the arms, as shown in Fig.

The code oil. the sections 2 remote from the QE P l'fS 11'" connected by a. base '3. This hasc in on are: oi "plate having a pair of laterally LtCQCl upstanding lugs 8 at epproiiiinutcl y 32.55 center and the ends the sectione i pivoted between the by a hell; or rivet 9.

Specification of Letters Patent.

and are Patented Apr. 8, $9121 Serial 1%. M23753.

The ends of the sections 1 of the pairs remote from the forks 3 are pivotally connected to a head 10, the said'head having a pair of depending laterally spaced lugs 11, bet-Ween which the ends of the sections are received, and the said ends, are pivotelly connected to the lugs by a boil; or rivet 12. Referring to Fig. 52, it will he noticed that both the sections 1 and 2 are rebbetcd .at their pivotal connection with the base and the head, the rzrbhcts indicated at 13 being of sniiicient depth so that the lateral feces of the sections 1 and 2 are flush with each other. Each section 2 has at the bolt 9 and each section 1 has at the bolt 12 a lateral extension or lug 14, the said lugs or extensions extending at approximeteiy a right angle to the body of the section.

'When the pairs of toggle levers are Eldjilw" cent to each other, that is, in a position to more the head the greatest possible distrance from the base 7, these lugs or extensions Il-t engage the base or the heed, as the case may he, as shown in Fig. 'Ithe pivotal connections of the pairs are moved toward and from each other by ethreziderl rod 15 having at one end :1 crank 1.6 for convenience in manipulating the some. T his rod rests in notches or recesses 5, in the upper faces of the blocks 5, and the rod hes a fixed stop or collar 17 at the end adjacent to the creinlc which engages outsidc'o'f the adjacent block. Near the other end e not 10 is thrczrded on to the rod, and this nut engages outside of the other bloclq the arrangement being such that when the rod is turned in one direction the stop 17 will bear against'the outer face of one block and the nut 18 against the outer face of the other block, and the turning of the rod in the proper direction Will draw the pivotal connections of the toggle levers together. The out 18 is prevented from rotation with the rodby its engagement with the arms of the forks 3,

It will he noticed, referring to Fig. 1, that the lugs 8 and 11 extend the full length of the base and the head, and the upper face of the head is concave, as shown st 19, to fit the housing 20 of the axle of on automobile, one wheel of which is indicated M21 The. improved jack is of light Weight, in expensive and very efficientfor thepurpose permitting a. powerful upward thrust at the ends of the line connecting the base and the head; The improved jack is arranged es shown in 1, the hose *8 resting upon the ground the head engaging beneath the axle. The rod already in engagement with the nut 18 is fitted in the notches 5 of the block 5, and by turning thelrod in the proper direction by. means of the crank the pivotal connections of the toggle levers Will be moved ,toward each other, to thrust upward on the head and lift the axle.

To release the axle the motion of the rod is reversed, and as soon as the axle is released, by lifting the rod from the recesses of the blocks the jack may be folded into small compass for storage. It will be understood that the jack may be made in any desired size, the size depending upon the conditions to be served by the jack.

It will be evident that. one rod may be used ith a number of jacks as, for instance, in

, ifting a house, the jacks being actuated in the desired order by the rod, and the jacks are. held in adjusted position by the mechanism shown in Fig. 5. The saicLmechanism comprisesa plate or bar 21 having at each end a pair of depending lugs 22.

Each pair of lugs is adapted to engage opposite sides of a section 1 or 2, and it will be evident that when so engaged the bar will hold the parts in adjusted position, to permit removal of the rod. .The bar may be engaged with the sections 1 and 2 above or below the joint. The element 16 may be engaged either aboveor below the rod, and doesi not interfere with the movement of 'the rod.";

ers, each consisting of pivotally connected simllar sections, a base pivotally connectlng the pairs at one end, a head pivotally conmeeting the pairs at the other end, the members of each pair carrying ablock at its pivotal connection, said block having a recess in its upper face and a threaded rod having near one end a fixed stop and near the othera nut and adapted to engage the recesses, the stop and the nut fitting outside of the block for the purpose specified, each member of each pair of toggle levers having at its outer end a lateral lugor extension, the lugs at each end of the levers extending in opposite directions and bein adapted to engage the. plate and head W en the pivotal connections of the members are at their nearest point. v

2. A jack comprising a pair of toggle levers, each consistin of plvotally connected similar sections, a ase pivotally connecting the pairs at one end, a head plvotally connecting the pairs at the other end,the members of each pair carrying a block at its pivotal connection, said block having'a recess in its upper face, and a threaded rod having near one end a fixed stop and near the other a nut and adapted to engage the recesses, the

stop and the nut fitting outside of the block for the purposespecified. HENRI D. REY. 

